Patch "x86: PM: Make APM idle driver initialize polling state" has been added to the 4.14-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    x86: PM: Make APM idle driver initialize polling state

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     x86-pm-make-apm-idle-driver-initialize-polling-state.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From f859422075165e32c00c8d75d63f300015cc07ae Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Tue, 6 Feb 2018 18:55:12 +0100
Subject: x86: PM: Make APM idle driver initialize polling state
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

commit f859422075165e32c00c8d75d63f300015cc07ae upstream.

Update the APM driver overlooked by commit 1b39e3f813b4 (cpuidle: Make
drivers initialize polling state) to initialize the polling state like
the other cpuidle drivers modified by that commit to prevent cpuidle
from crashing.

Fixes: 1b39e3f813b4 (cpuidle: Make drivers initialize polling state)
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: 4.14+ <stable@vger.kernel.org> # 4.14+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 arch/x86/kernel/apm_32.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -2389,6 +2389,7 @@ static int __init apm_init(void)
 	if (HZ != 100)
 		idle_period = (idle_period * HZ) / 100;
 	if (idle_threshold < 100) {
+		cpuidle_poll_state_init(&apm_idle_driver);
 		if (!cpuidle_register_driver(&apm_idle_driver))
 			if (cpuidle_register_device(&apm_cpuidle_device))
 				cpuidle_unregister_driver(&apm_idle_driver);


Patches currently in stable-queue which might be from rafael.j.wysocki@intel.com are

queue-4.14/x86-pm-make-apm-idle-driver-initialize-polling-state.patch
queue-4.14/cpufreq-powernv-dont-assume-distinct-pstate-values-for-nominal-and-pmin.patch